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Loki97 is 128-bit block cipher that accepts a variable-length key. It was designed by Lawrie Brown, Josef Pieprzyk, and Jennifer Seberry. The default key length in this implementation is 128 bits. Loki97 was one of the 15 candidates for the AES.

This module implements the cipher used by OICQ instant messaging protocol, used by Tencent Technology Limited, China.

The One Time Pad encryption method is very simple, and impossible to crack without the actual pad file against which the to-be-encrypted message is XOR'ed. Encryption and decryption are performed using excactly the same method, and the message will decrypt correctly only if the same pad is used in decryption as was use in encryption. Seamus Venasse <svenasse@polaris.ca>

A small command line utility for parsing PKCS#10 certificate signing requests to perl data structure and provides accessor methods to supported elements. It is based on the generic ASN.1 module by Graham Barr and on the x509decode example by Norbert Klasen. It is also based upon the works of Duncan Segrests Crypt-X509-CRL module. The module parses common fields and extensions. Some fields might be missing.

Crypt::PWSafe3 provides read/write access to Password Safe V3 database files.

Crypt::Rhash module is an object-oriented interface to the LibRHash library, allowing simultaneous calculation of several hash functions for a file or a text message. Resulting hash digest can be obtained in hexadecimal, BASE32, BASE64, raw binary format or as a magnet link.

Crypt::RSA is a pure-perl, cleanroom implementation of the RSA public-key cryptosystem. It uses Math::Pari(3), a perl interface to the blazingly fast PARI library, for big integer arithmetic and number theoretic computations. Crypt::RSA provides arbitrary size key-pair generation, plaintext-aware encryption (OAEP) and digital signatures with appendix (PSS). For compatibility with SSLv3, RSAREF2, PGP and other applications that follow the PKCS #1 v1.5 standard, it also provides PKCS #1 v1.5 encryption and signatures. Crypt::RSA is structured as bundle of modules that encapsulate different parts of the RSA cryptosystem. The RSA algorithm is implemented in Crypt::RSA::Primitives(3). Encryption schemes, located under Crypt::RSA::ES, and signature schemes, located under Crypt::RSA::SS, use the RSA algorithm to build encryption/signature schemes that employ secure padding. (See the note on Security of Padding Schemes.) The key generation engine and other functions that work on both components of the key-pair are encapsulated in Crypt::RSA::Key(3). Crypt::RSA::Key::Public(3) & Crypt::RSA::Key::Private(3) provide mechanisms for storage & retrival of keys from disk, decoding & encoding of keys in certain formats, and secure representation of keys in memory. Finally, the Crypt::RSA module provides a convenient, DWIM wrapper around the rest of the modules in the bundle.

This module provides a single command for generating random password that is close enough to a real word that it is easy to remember. It does this by using the frequency of letter combinations in a language (the frequency table is generated during installation although multiple tables can be generated and used for different languages). This module should not be used for high security applications (such as user accounts) since it returns passwords that are not mixed case, have no punctuation and no letters. This word can be used as a basis for a more secure password. The language of the password depends on the language used to construct the frequency table.

This is just a simple frontend module for autoloading of various Digest:: modules. It also provide documentation of the interface that all Digest:: modules should provide.

Rabbit is a new stream cipher based on the properties of counter assisted stream ciphers, invented by Martin Boesgaard, Mette Vesterager, Thomas Pedersen, Jesper Christiansen, and Ove Scavenius of Cryptico A/S.